A companion to Euclid: being a help to the understanding and remembering of the first four books. With a set of improved figures, and an original demonstration of the proposition called in Euclid's the twelfth axiom. By a Graduate1837 |
Vanlige uttrykk og setninger
AB² AC² AD² angle contained angle equal Argument ad absurdum base DF BC² BD² BERNAYS bisect CB² cuts the circle DC² Demonstration itself consists diameter EB² EG² EH² ENGLISH NOTES equal straight lines equiangular equilateral Euclid F Steps fall figure Geometry given circle given point given rectilineal angle given straight line given triangle i. e. less inscribe interior angles King's College School learner line be divided line drawn line touches parallel parallelogram pass pentagon point of contact proof PROPOSITION IX PROPOSITION VIII PROPOSITION XV Proved by showing rectangle contained right angles right line shows the supposition similarly subtending Suppose supposition is false Theorem whole line